How can I do the following?

please, I need your help just for doing the filtering stage as in the attached paper and also I will attach the signal as mentioned in the same paper.

1- Applying two median filters, one with a sliding window of length n = 600 ms and another with n = 200 ms, we used the Matlab function medfilt1.

2- After the application of the two median filters, we applied a 12-order low pass filter with a 35 Hz cut-off frequency.

[Akira Agata]

Please refer to the following pages:

https://jp.mathworks.com/help/signal/ref/medfilt1.html

https://jp.mathworks.com/help/signal/ug/fir-filter-design.html